1213002031123 has 16 divisors (see below), whose sum is σ = 1275112143360. Its totient is φ = 1152450675936.

The previous prime is 1213002031117. The next prime is 1213002031141. The reversal of 1213002031123 is 3211302003121.

It is a cyclic number.

It is not a de Polignac number, because 1213002031123 - 2¹⁷ = 1213001900051 is a prime.

It is a super-2 number, since 2×1213002031123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213002031123.

It is not an unprimeable number, because it can be changed into a prime (1213002031103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5717286 + ... + 5925652.

It is an arithmetic number, because the mean of its divisors is an integer number (79694508960).

Almost surely, 2^{1213002031123} is an apocalyptic number.

1213002031123 is a deficient number, since it is larger than the sum of its proper divisors (62110112237).

1213002031123 is a wasteful number, since it uses less digits than its factorization.

1213002031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212106.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1213002031123 its reverse (3211302003121), we get a palindrome (4424304034244).

The spelling of 1213002031123 in words is "one trillion, two hundred thirteen billion, two million, thirty-one thousand, one hundred twenty-three".